Qabisah bin Dhu'ayb al-Khuza'i said that Sayyiduna Bilal (may Allah be pleased with him) said: O Messenger of Allah, people trade and pursue their livelihoods, and we are unable to do that. He (peace and blessings be upon him) said: "Are you not pleased that the mu'adhdhins will have the longest necks among people on the Day of Resurrection?"
Hadith Referenceالمعجم الكبير للطبراني / باب الباء / 1076